DE102017107977A1 - Apparatus for rehabilitating a pipeline by means of a lining fiber hose - Google Patents

Abstract

In a device for refurbishing a pipeline by means of a lining fiber tube impregnated with a reaction resin which cures under the influence of light-emitting components, the device has a head part 1 made of a transparent, temperature-resistant material and includes end caps 2, 3 at both end faces the device hermetically from the outside, wherein the entire device or at least its head part 1 is filled with a transparent, flame-retardant insulating liquid 5, and wherein the device contains an insert, the insulating material 8 are equipped with high-power LEDs 9.

Description

The invention relates to a device for rehabilitating a pipeline by means of a lining fiber tube, which is impregnated with a reaction resin and which cures under the influence of the radiation of light-emitting components.

In the rehabilitation process, a multi-layer, tubular structure, a so-called inliner whose at least one layer is impregnated with a radiation-curable resin, uncured introduced into the pipe section to be rehabilitated and pressed in this area by means of compressed air flat against the pipeline. With the help of a movable, high-energy radiation source, the speed of which is matched to the radiation intensity of the light source, then hardens the set to the wavelength of the radiation source resin. The radiation source may emit infrared light, IR light, visible light or UV light and preferably consists of several components or groups.

From the DE 42 05 113 C1 is a radiation source for the irradiation of inner walls of elongated cavities with a chassis known, the central support is equipped with several circumferentially distributed UV lamps. This type of UV lamps require no cooling.

In the DE 198 17 413 C2 discloses a method and apparatus for rehabilitating pipelines by introducing a fiber tube impregnated with a UV-curable resin, wherein the pull-through speed of a UV lamp assembly is automatically controlled in response to the temperature on the inner tube surface produced by the exothermic curing reaction.

From the WO 2005/103121 A1 UV light-emitting LEDs are known. The DE 10 2007 052 915 A1 shows a device for curing plastic refiners for sewer rehabilitation with at least one UV light source, are provided in the rollers for mounting the device in the tube and each end a video camera. Widely distributed IR temperature sensors detect the exothermic polymerization that takes place during curing. This prevents the formation of too high temperatures during curing, which can completely damage the lining process.

The DE 101 22 566 B4 For the pipe rehabilitation with a fiber hose of more than 10 mm wall thickness impregnated with a curable resin containing a UV initiator and an organic peroxide, an intensity of the light source of at least 800 watts / m ² , the two consecutive arranged to provide UV lamps of at least 400 W / m ² each power.

According to the EP 1 959 183 A1 and EP 2 129 956 B1 are for pipe rehabilitation by means of a device a plurality of planar or curved wall surface elements arranged thereon with light emitting high-performance light emitting diodes provided whose large-sized heat sink to the center of the device towards a channel omitted, which is traversed by a cooling fluid by means of a pump or a blower. The annular or polygonal shaped arranged wall surface elements can be protected by beads or an additional transparent outer shell against mechanical damage. On the front side of the multi-member device, a video camera is arranged.

From the DE 10 2007 038 197 A1 Further, a method and an apparatus for rehabilitating pipelines by introducing a fiber tube, which is impregnated with a photohardenable reaction resin, known, in which the light-emitting diodes are arranged on a tubular or spiral carrier in a plurality of parallel annular or helical areas, wherein the light-emitting diodes the respective adjacent areas are horizontally or circumferentially offset from each other. A cooling device is not disclosed.

The invention has for its object to provide a device for rehabilitating a pipeline by means of a lining fiber tube, which is impregnated with a reaction resin which cures under the influence of the radiation of light-emitting components, wherein the device upon increasing a temperature-controlled Passiergeschwindigkeit in the fiber tube and waiver is equipped to incorporate costly metallic heatsinks, supplies and shrouds of cooling liquid lines, pumps or blowers with high performance light emitting diodes as a self-contained, liquid cooled system.

The object is achieved according to the invention in that the device has a head part made of a transparent, temperature-resistant material, that end caps hermetically seal the device on both end faces, the entire device or at least its head part being filled with an opaque or transparent, flame-retardant insulating fluid, and wherein the device includes an insert whose insulating material carrier is equipped with high-power LEDs.

Advantageously, the insert in the longitudinal axis of the device is rotationally symmetrical and can be driven by a motor via a shaft or hydraulic line.

According to a preferred variant, the insert has radially, star-shaped or bulbous protruding and provided with conductor strips insulating carrier, which are equipped in the region of the head part with high-performance light-emitting diodes.

According to another alternative type of training carries the use of one or more wings or arches from both sides populated insulating material.

Preferably, the insert carries a star of three to six, preferably four, both sides equipped with insulating 5.

In a further embodiment of the invention has a one-sided in the flat state Isolierstoffträger folding zones and formed in the assembled state, a radially projecting, star-shaped structure with externally arranged high-power LEDs.

The insert is driven in a preferred embodiment via a shaft by a controllable electric motor, which is arranged in one of the end caps, wherein the insert then rotates at a certain speed. The insert can also be designed without drive or fixed.

In a further development of the invention, a pivotable video camera is arranged in and / or on at least one end cap. If a video camera is arranged in and on the end cap, better monitoring is possible since two views are comparable at the same time.

In addition, sensors are advantageously provided in both end caps, which detect at least the reaction temperature on or in the fiber tube, the temperature of the air in the tube, the temperature of the insulating liquid and the compressed air in the tube during the hardening process and report to an external central control / regulation.

In a further embodiment, the rear end cap has a combined mechanical-electrical connection to a flexible cable or push cable, via which an existing electric motor, the video camera, the high-performance light-emitting diodes and the sensors are acted upon, wherein the feed lines to the front end cap through the hollow shaft are passed. However, it may also be formed a hydraulic-electrical connection, which has a sliding hydraulic line, wherein the supply lines are guided through the hollow shaft or the hydraulic line or along the shaft or hydraulic line.

According to another variant, only one of the end caps is filled with insulating liquid in addition to the head part of the device.

As insulating liquid is suitable both a mineral oil and an organic ester.

The high-performance LEDs are tuned in their wavelength to the particular reaction resin used in the fiber tube. But they can also be arranged radiating over their extension in different wavelengths and / or different light intensities. Their assembly can be done, for example, by direct wire bonding and casting of the chips, as SMD components or in wire leg soldering on Isolierstoffträgern.

The head part advantageously has a rotationally symmetrical cylindrical or polygonal or bulbous cross section.

In development of the invention, one or more after ordered liquid storage for pumping the insulating liquid are connected to the head part.

The insert itself can be helical and driven solely by the insulating liquid.

With the invention, various advantages over the prior art are achieved, in particular by the arrangement of the components in a separate insulating high electrical resistance, a high electrical insulation factor, high resistance to shocks and shocks, high corrosion protection, also a greater range of Device due to the elimination of air or water supplies, a long service life due to the compact design, as well as a uniform and improved cooling of the high-power diodes, as well as more in the embodiment closer executed advantages.

• 1 eine Gesamtansicht einer Vorrichtung,
• 2 einen Schnitt A - A durch die Vorrichtung nach 1,
• 3 ein Beispiel für einen einseitig mit Hochleistungs-Leuchtdioden 9 bestückte Isolierstoffträger 8,
• 4 ein weiteres Beispiel für eine Bestückung mit Hochleistungs-Leuchtdioden 9,
• 5 ein Beispiel eines Einsatzes, dessen Platinen doppelseitig mit Hochleistungs-Leuchtdioden 9 bestückt sind,
• 6 ein Beispiel einer Vorrichtung in kugelähnlicher Ausführung mit bauchig angeordneten Isolierstoffträgern 8, die einseitig bestückt sind und
• 7 ein Beispiel einer Vorrichtung mit einem angedockten Flüssigkeitsspeicher19

The invention will be explained in more detail with reference to an embodiment. In the accompanying drawings show:

• 1 an overall view of a device
• 2 a section A - A through the device according to 1 .
• 3 an example of a unilaterally equipped with high-power LEDs 9 insulating carrier 8,
• 4 a further example of equipping with high-power light-emitting diodes 9,
• 5 an example of an insert whose boards are equipped with high-performance LEDs 9 on both sides,
• 6 an example of a device in ball-like design with bulbous arranged Isolierstoffträgern 8, which are equipped on one side and
• 7 an example of a device with a docked liquid storage 19

According to the 1 the device has a preferably circular in cross-section, elongated headboard 1 made of a heat-resistant, transparent material, such as glass or suitable plastic, whose open ends with two end caps 2 . 3 made of VA material or aluminum fluid-tight. To improve the tightness sealing elements 4 between the edges of the headboard 1 and the end caps 2 . 3 be provided. The headboard 1 and the two end caps 2 . 3 thus form an outwardly dense vessel. The device is equipped with an opaque or transparent, heat-resistant cooling and insulating fluid 5 filled. As insulating fluids 5 For example, transformer oils, condenser oils, other suitable mineral oils or organic esters are suitable.

The insulating fluid 5 fills the entire device, but can also be provided according to a special form of the invention, that only the head part 1 is filled or the headboard 1 and only one of the end caps 2 . 3 , The other or both end caps 2 . 3 are in such a case by a partition (not shown) from the headboard 1 foreclosed. Inside the device is mounted an insert whose shaft 6 from an electric motor 7 continuously variable or clocked in both directions can be driven. The direction of rotation and rotational speed of the shaft 6 can be controlled automatically, so that the torque of the insert can be regulated or automatically changed. According to a special variant of the invention eliminates the motor drive and the shaft 6 rests or the insert is due to a special helical shape (not shown) solely by the moving insulating 5 driven or is moved by pumping the insulating liquid.

The insert carries in the area of the head part 1 substantially radially projecting and provided with conductor strips insulating carrier 8th on which preferably high-performance light-emitting diodes (H-LED) 9 Surface-mountable design (H-SMD-LED) are applied. The high-performance LEDs 9 can be advantageous by direct wire bonding of the high-performance light-emitting diode chip (H-COB-LED) and casting on the Isolierstoffträgern 8th be applied. Or there are provided with "pins" and a reflector having light emitting diodes with a transparent plastic housing. As Isolierstoffträger 8th both printed circuit boards and printed circuit boards are considered. The wavelength of the LEDs 9 is matched to the resin to be cured, with which the lining, ie fiber tube is impregnated. It can be both UV-emitting diodes with z. B. 420 nm wavelength as well as IR-emitting high-power diodes can be used.

In both end caps 2 . 3 are - in addition to the optionally provided electric motor 7 in the rear end cap 3 - Housed further functional elements of the device. So has the front end cap 2 via a controllable video camera 10 , a sensor 11 for detecting the air temperature, an IR sensor 12 for detecting the reaction temperature of the lining and a shaft end bearing 13 for the shaft end of the shaft 6 , In the rear end cap 3 there is another IR sensor 12 for detecting the temperature of the lining, a pressure sensor 14 for detecting the air pressure inside the closed-end liner and optionally a second video camera. Furthermore, a temperature sensor for detecting the temperature of the insulating liquid 5 be provided within the device. To the end cap 3 is a screw connection 15 with integrated E-plug 16 mounted to which a suitable electric cable or stiffer push cable 21 can be connected. About this cable are the electric motor 7 the device, the video camera 10 and the high-performance LEDs 9 powered and controlled, the sensor electronics powered and the sensors data 11 . 12 . 14 forwarded to a central external computer-based workstation.

According to the 1 combined with 2 and 3 carries the wave 6 the use of a luminous star of one with high-performance LEDs 9 equipped insulating carrier 5 , In the example, there is the Isolierstoffträger 5 out over hinge zones 17 electrically and mechanically connected individual printed circuit boards, on each of which 6 high-performance COB LEDs in the flat state of the insulating substrate 5 are bonded on one side. The star-shaped folding structure im on the shaft 6 mounted condition is particularly good 2 showing a section AA through the device according to 1 shows. The use with the high-performance light-emitting diodes 9 on the outer surfaces of the Isolierstoffträgers 5 is within the header 1 with a transparent, heat-resistant insulating fluid 5 lapped. The rinsing process and thus the cooling of the high-performance LEDs 9 can be reinforced when using a motor 7 , especially a controllable electric motor with RL-Lauf, is driven. The insert may also be helical and then alone by means of the flushing with insulating liquid 5 or by pumping the insulating liquid 5 rotate.

4 shows a cross section through another use. The fixed axis or rotating shaft 6 the use is with one too a star-folded insulating film or composite insulating panels provided which the Isolierstoffträger 8th for circumferentially distributed high power LEDs 9 form.

In the 5 a first modification is presented within the inventive concept, in which individual printed circuit boards as Isolierstoffträger 8th Double-sided with high-performance LEDs 9 are equipped. The Isolierstoffplatinen are advantageous directly into the shaft 6 inserted an insert. In the example, three star-shaped outgoing boards are shown, but it can also be two, four or more.

The 6 shows the view of an egg-shaped device (but this can also be spherical), in which the head part 1 bulbous, but rotationally symmetrical, and with the end caps 2 . 3 by means of sealing elements 4 concludes. The end caps 2 . 3 in turn take sensors 10 . 11 . 12 . 14 on and are, as well as the headboard 1 , with a cooling and insulating liquid 5 filled. The insert carries several Isolierstoffträger 8th , in the example eight, comparable to barrel staves, circumferentially around the shaft 6 arch of the insert. In the example, the Isolierstoffträger wear 8th High-performance LEDs 9 different power / light intensity, for example from the center to the outside increasingly from 10 W to 30 W and / or different emitting wavelengths and / or different design, in particular to achieve that the fiber tube is uniformly irradiated despite the egg shape or spherical shape of the device.

The insert may be fixed or may rotate axially around a shaft (not visible) by an electric motor. Alternatively, the insert can rotate by means of a circulating insulating liquid, either solely by the self-heat development of the insulating liquid 5 or by pumping inside the device. For this purpose, the insert is preferably designed helically.

It is understood that the headboard 1 must not be circular in cross-section, but as polygonal, as can be 6- or 8-square and about its longitudinal axis straight, bulbous or waisted. Accordingly, the inserts are shaped.

The individual high-performance LEDs 9 are, as well as in 1 , in each case in variations of series and / or parallel connections via cable feeders with the E-plug 16 connected. The cable to the electrical components in the front end cap 2 leads from the E-plug 16 through the wave 6 , designed here as a hollow shaft. The performance of a device can be designed for the first time preferably up to 1000 W / m ² , the power gradually or continuously to z. B. 800 W, 600 W or 400 W can be shut down as needed, for example, depending on the flow rate, the nominal diameter of the tube and the properties of the lining, so the resinated fiber tube. The fiber hose should not be exposed to more than 180 ° C during curing to avoid charring or burning damage.

Ultimately, the 7 an advanced variant, which is that to the device 1 a via a clutch 18 a liquid storage 19 with a pump arranged in this or on this 20 is docked to the insulating fluid 5 to be able to umzupumpen and thus improved cooling of the insulating liquid 5 to reach. There may also be several more liquid stores 19 be arranged as a kind of auxiliary cooler. The liquid stores 19 can additionally be provided with cooling fins in order to better dissipate the heat from the insulating liquid to the air in the pipe can. The insulating fluid 5 Cools the high-performance diodes particularly well here 9 , This has the advantage that the curing can be done with very high power without the high-performance LEDs 9 can overheat, since the heat is optimally dissipated by pumping from the headboard. Another advantage is that due to the flow of the insulating liquid 5 with a corresponding design of the use of this even without electric motor drive rotates around a shaft powerful, which causes a very uniform irradiation and thus curing of the fiber tube. To the rear end of the fluid reservoir 19 is a flexible or rigid supply cable 21 which also connected as a push cable 21 can be trained.

• 1. Steuereinheit
• 1.1 Elektrisch Steuerung/Regelung mit PC, Monitor und Tastatur
• 1.2 Elektrische Steuerung/Regelung der Hochleistungs-Leuchtdioden
• 2. Haspel mit E-Antrieb und einem flexiblen Kabel oder Schiebekabel
• 2.1. Elektromechanisches Geschwindigkeits-Control-System
• 2.2 Haspelgestell mit Rollen
• 3. Hochleistungs-Leuchtdioden-Vorrichtung mit IR-Faserschlauch-Temperaturmessung, IR-Lufttemperaturmessung, Luftdruckmessung, TV-Kamera, Leuchtdioden-Strahlstern.

The device described is part of an overall system comprising:

• 1st control unit
• 1.1 Electrical control with PC, monitor and keyboard
• 1.2 Electrical control of the high power LEDs
• 2. Reel with electric drive and a flexible cable or push cable
• 2.1. Electromechanical speed control system
• 2.2 Coiler frame with rollers
• 3. High-performance light-emitting diode device with IR fiber tube temperature measurement, IR air temperature measurement, barometric pressure measurement, TV camera, light-emitting diode blasting star.

The linear velocity of the device is monitored in a "heating mode" control technology and according to specifications of the manufacturer Lining driven. The roll up function of the system is automatic.

• - sehr schnelle gesteuerte Inliner (Faserschlauch) Aushärtung durch hohe Strahlungsleistung
• - hervorragende Isolationswerte zwischen den Hochleistungs-Leuchtdioden und zu den sonstigen Bauteilen
• - ausgezeichneter Schutz der Bauteile gegen Korrosion und Kurzschluss
• - ausgezeichneter Schutz vor Überhitzung einzelner Hochleistungs-Leuchtdioden und deren Baugruppen infolge einer effektiven Wärmeableitung über die Isolierflüssigkeit
• - Nutzung der Vorrichtung unter höheren Temperaturen als üblich und somit ein schnelleres Stabilisieren des Auskleidungsschlauchs
• - verbesserter mechanischer Schutz aller Komponenten gegen äußere Einwirkungen, wie Stöße
• - Vermeidung von partiellen Temperaturspitzen, die den Wirkungsgrad und Lebensdauer der Hochleistungs-Leuchtdioden negativ beeinflussen
• - zusätzliche Verbesserung der Kühlung bei motorischem Drehantrieb des Einsatzes
• - Möglichkeit der Schaffung eines Drehantriebs allein durch die Isolierflüssigkeit
• - kein Nachschleppen von Kühlleitungen infolge eines geschlossenen Kühlsystems.

By the complete oil bath of all mechanical and electrical / electronic / optoelectronic components in case of preferable filling of the entire device in an insulating liquid 5 , so the head part 1 including both end caps 2 . 3 In summary, the following advantages result:

• - very fast controlled inliner (fiber hose) curing due to high radiation power
• - excellent insulation values between the high-performance LEDs and other components
• - excellent protection of the components against corrosion and short circuit
• - Excellent protection against overheating of individual high-performance light-emitting diodes and their assemblies as a result of effective heat dissipation via the insulating liquid
• - Use of the device at higher temperatures than usual and thus a faster stabilization of the lining tube
• - improved mechanical protection of all components against external influences, such as shocks
• - Prevention of partial temperature peaks that adversely affect the efficiency and life of the high-performance LEDs
• - Additional improvement of the cooling with motorized rotary drive of the insert
• - Possibility of creating a rotary drive solely by the insulating liquid
• - no dragging of cooling pipes due to a closed cooling system.

LIST OF REFERENCE NUMBERS

1

headboard

2

front end cap

3

rear end cap

4

sealing element

5

insulating

6

Shaft or hydraulic line

7

Engine, electric or hydraulic motor

8th

insulating support

9

High-performance light-emitting diode

10

video camera

11

Air temperature sensor

12

IR sensor

13

wave repository

14

Air pressure sensor

15

Screw connection or coupling

16

E-plug

17

hinge zone

18

coupling

19

liquid storage

20

pump

21

electric wire

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4205113 C1 [0003]
• DE 19817413 C2 [0004]
• WO 2005/103121 A1 [0005]
• DE 102007052915 A1 [0005]
• DE 10122566 B4 [0006]
• EP 1959183 A1 [0007]
• EP 2129956 B1 [0007]
• DE 102007038197 A1 [0008]

Claims (17)

Device for rehabilitating a pipeline by means of a lining fiber tube impregnated with a reaction resin which cures under the influence of light-emitting components, characterized in that the device has a head part (1) made of a transparent, temperature-resistant material, end caps (2, 3) hermetically seal the device to the outside on both end faces, that the entire device or at least its head part (1) is filled with a transparent, flame-retardant insulating liquid (5), and that the device receives an insert on the insulating material carrier (8) High-power LEDs (9) are arranged. Device after Claim 1 , characterized in that the insert in the longitudinal axis of the device is rotationally symmetrical and can be driven by a motor via a shaft or a hydraulic line (6). Device after Claim 1 or 2 , characterized in that the insert radially, star-shaped or bulging protruding and provided with conductor strips insulating carrier (8), which are equipped in the region of the head part (1) with high-power LEDs (9). Device after Claim 1 . 2 or 3 characterized in that the insert carries one or more wings, or arches made of one or both sides equipped insulating carriers (8). Device after Claim 5 , characterized in that the insert star-shaped from three to six, preferably four, both sides populated Isolierstoffträgern (8) is formed. Device after Claim 6 , characterized in that in the flat state unilaterally stocked Isolierstoffträger (8) has folding zones and in the assembled state, a radially projecting, star-shaped structure with externally arranged high-power LEDs (9) ausformt. Device according to one of the preceding claims, characterized in that in one of the end caps (2, 3), a controllable electric motor (7) for driving the shaft (6) is arranged. Device according to one of the preceding claims, characterized in that a pivotable video camera (10) is arranged in and / or on at least the end-side end cap (2). Device according to one of the preceding claims, characterized in that in both end caps (2, 3) sensors (11, 12, 14) are arranged which at least the reaction temperature on or in the fiber tube, the air temperature in the tube, the temperature of the insulating liquid (5 ) and the compressed air in the pipe during the hardening process and report to an external central control / regulation. Device according to one of the preceding claims, characterized in that the rear end cap (3) has a combined mechanical-electrical connection (15, 16) to a flexible cable or push cable, via which the electric motor (7) the video camera (10) , the light emitting high-power diodes (9) and the sensors (11, 12, 14) are acted upon, or a hydraulic-electrical connection (15, 16) to a flexible or sliding hydraulic line, wherein the supply lines to the front end cap (2) through the hollow shaft or hydraulic line (6) are passed. Device according to one of the preceding claims, characterized in that the head part (1) and only one of the end caps (2 or 3) of the device are filled with insulating liquid (5). Device according to one of the preceding claims, characterized in that the insulating liquid (5) is a mineral oil or an organic ester. Device according to one of the preceding claims, characterized in that the high-power light emitting diodes (9) are tuned in their wavelength to the reaction resin used in the fiber tube. Device according to one of the preceding claims, characterized in that the high-power light-emitting diodes (9) radiate over its extension in different wavelengths and / or different light intensity. Device according to one of the preceding claims, characterized in that the head part (1) in cross section rotationally symmetrical, cylindrical, polygonal or bulbous formed on its longitudinal side is straight, bulbous or waisted. Device according to one of the preceding claims, characterized in that with the head part (1) one or more after ordered liquid storage (19) for pumping the insulating liquid (5) are connected. Device according to one of the preceding claims, characterized in that the insert is helical and is driven by the flow of the insulating liquid (5).

Images